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Storage moduli for the different PEG-DA/NIPAAm hydrogels. Rheology was used to compare the storage modulus of the three PEG-DA/NIPAAm hydrogels used in this study: PEG 2000, PEG 6000, and PEG 10,000. The storage modulus of the PEG 2000 hydrogel was found to be significantly lower than that of the PEG 6000 and PEG 10,000 hydrogels, with no significant difference between PEG 6000 and PEG 10,000 hydrogels. *P ≤ 0.05.
